Carriage-curtain fastener.



FRED S. CABLE, OF BRSKLINE, MASSA() r'USETTS, ASSIGNOR vPAIY, OF BOSTN', MASSACHUSETTS,

TG CARR FAQTESXTE'ECJ GOM- f'l GRPGRATIGN OF MANE,

CARRIAGE-CURTAIN EASTENEEL.

Serial No. 4333383.

-To all who/m it may concern:

Be it known that li, FRE-n S, CARR, of Brookline, in the county of Norfolk and State or' Massachusetts, have invented certain new and useful mprovements in Can riage-Curiain Fasteners, of which the following is a specilication.

This invention relates to av carriage eurtain fastener comprising,` a base adapted to bc attached to the frame-work of a carriage top, a shank projecting' outwardly from the base, and adapted to enter a socket or eye in a carriage curtain, and. a. button which is pivotally connected to the shank and base, and adapted to be turned to diil'erei'it positions relatively to the shank, the form ot' the shank and button beii'ng,- such that when the button is in one osition, its ends are Hush with the ends of the shank, so that the button does not overhano' the shank, and when the button is turned to another position, it extends crosswise of the shank, its ends overhanging the sides or' the shank and the curtain socket through which the shank passes, the head beine' therefore adapted,

when in the last named position, to prevent' the removal of the curtain from the shank.

The invention has .'t'or its object to provide a fastener of the character stated, the button of which is capable of only rotary movement, is rigidly supported against any other movement relatively to Ythe base and shank, and is adapted to he yieldingly se cured in its operative position by the shank, the construction being such that the base may have a minimum width, and therefore adapted for application to a narrow supporting member. Y

The invention consists in the improvements which l will now proceed to describe and claim.

Ofnthe accompanying drawings, forming` a part of this specificati0in-Figures l, 2, and 3 represent ditlerent elevations of a carriage curtain fastener embodying` my invention. Fig. t represents a section on line 4`4 of Fig. 3. Fig. 'represents in section the base, the shank, and the button detached from each other. Fig. 6 represents a sectional view of a modification.

The saine reference characters indicate the same parts in all the figures.

In the drawings,-12 represents the base of my improved carriage curtain fastener,

tae same being provided with openings 1?;

Jfor thereception or the screws which attach the device to the frame-work or a carriage top.

,ist represents a tubular stud which idly mounted -on the base and projects out- -ardly therefrom, the stud being' preferably integral with the base, both the base and stud, as here shown, being trn'nied from sheet metal by suitable dies.

l5 represents the button which is provided with a stem 1G formed to closely tit the interior of the stud le, and to rotate freely therein, -the stem and button being confined against outward movement relatively to the base in any suitable way, preferably b): spread ing' or upsetting the inner end ot' the steml to form a bur or head 1T, ring the inner side ot the hase, as .indicated in Figs. e and The button has a rotative bearing' at on the outer end of the stud as will be hereinafter described, so that the stein and button are confined by the. sind against inward movement relatively to the base. The button therefore has only a rotary movement relatively to the base and is rigidly conlined against movement in anyv other direction.

1S represents the shank which occupies a socket in a carriage curtain when the device is in use, said shank being interposed tween'the base and the button, and having an oblong, and preferably an elliptical 'torni in cross section, so that it is adapted to lit a correspondingly shaped socket in the car'- riage curtain. The shank is provided at iis outer end with a head 19-containing an aperture 20 having a close sliding fit on the tubular stud la. The shank 1S and its head are preferably made from a `single piece of sheet metal formed by suitable dies, the shank and the button being provided with interlocking members, which are. preferably grooves 2l formed inthe outer" surface or the head 19, and tongues 22 formed ou the inner edge of the button and adapted to enter the grooves 2l, there heingiwo pairs of grooves, those of one pair extendinglengtlr wise of the shank, while those of' the other pair extend erosswise of the shank, so that when the shank is in the position shown by full lines in Figs. l, 2, and 3, its tongues euone pair of grooves which hold the button in the position shown by ruil lines, the ends or' the button beingpractically iiush with the ends of the shank. When the butileton is turned to the position shown in dotted lines, its tongues engage the grooves nii the other pair, and are held thereby with the ends of the button overliaiiging the sides of the shank, so that the button prevents the removal of the curtain socket shank.

'The shank has a limited end wise movement relatively to the base and button, and is pressed outuf'ardly by a spring 23 inten posed between the base and the head of the shank, the grooves ot the shank being thus held yieldingly in engagement with the tongues or" the button. When the button is turned, the inclined sides of its tongues act ingl on the inclined lsides of the grooves 2l, torce the shank inwardly against the stress of the spring 23 until the movement of the button brings the tongues into alinement with the other pair oi" grooves inthe shank, the spring then pressing the shank out- ,wardly and causing the grooves to lock or retain the button against accidental rotary movement.

The shank is guided in its movements partly by the tubular stud is and partly by a shoulder 2e formed on the base, said shoulder surrounding the base ot the tubular stud le.

:in the embodiment oic the invention shown in Figs. l to 5,'inlusive, the shoulder 2d is below the outer surface of the base, and bears on the external surface of the shank, while in the construction shown in -Fig. 6,

the said shoulder projects outwardly from the outer surface of the base, and bears on the internal surtace ot the shank. ln either case, the outer end portion of the shank is' guided.- by the tubular stud 14, and the inner end portion by the shoulder on the base, so that the shank cannot. tip in any direction,

valthough free to have a liii'iitedxendwise outwardly beyond the head of the shank 18,A and bearingion the button.

ln my improved fastener, there is no movement whatever of the button relatively to the base, excepting a rotary movement, the button being rigidly supported bythe tubular stud and base against inward and outward movements, and against lateral movement in any direction, hence the button cannot yield to or be displaced by ordinary outward or sidewise pressures exei ed upon it by or through the curtain.

lt will be seen that by making' the socketengaging' shank ot the carriage curtain tasteiier movable cndwiseto lock and release the button, l am enabled to locate the spring which causes the locking engagement between the button. and. the shank wholly out from the essere or" Contact with the button and its stein, and to so Ldispose said springthat its lateral projection from the center of the rotary movement oi1 the button reduced to the minimum, so that the base may be made much narrower than would be possible if the sprin` were attached directly to the stein and projected laterally therefrom, as is the case in all prior fasteners ot' this character, in which the button is confined against iiiward and outward movement relatively to the base. ln such prior fasteners, the spring has been in the form of a resilient tongue projecting laterally from the stein of the button and engaging a detent on the base,

'the necessary length of the tongue and the dist-ance between. the detent and stem being such as to require a relatively wide base. narrow base is desirable when the fastener is to be applied to a narrow support.

By making the Abase and shank ot sheet metal, as here shown, l reduce to the minimum the cost of material, and at the saine Y time produce a curtain fastener which has suitable strength and durability, and is coinposed ot parts which are adapted to be conveniently assembled with the minimum eX- penditure oit time and labor.

l claim: A

l. A curtain fastener comprising a base formed of a single piece oi-I metal provided with a rigid tubular stud, said stud rbeing centrally located and integral wit-li said base, a button having a stem rotatably mounted Within said stud, means being provided to prevent relative longitudinal movement of said stem and saidstud, a hollow shank surroundin said stud, a spring act ing against said s ank, means for preventing rotation of said shank with relation to said base, and cooperating interlocking devicesrcarried by said shank and said button.

2. A curtain fastener comprising a base foiinedof a single piece 'of metal provided with a rigidv tubular stud, 'said stud being centrally located and integral with said base, a button having av stem rotatably mounted within said stud, means being provided to prevent relative longitudinal movement, of said stein and said stud, a hollow shank surrounding said stud, and provided with an annular recess to receive the free end of said stud, a spring acting against said shank, means for preventing rotation of said sli-ank with relationto said base, and cooperating interlocking devices carried by said shank and said button. y

in testimony whereof l have aliixed my signature, iii presence of two witnesses.

l. W'. ,Passive-rr. 

